221011011112 has 8 divisors (see below), whose sum is σ = 414395645850. Its totient is φ = 110505505552.

The previous prime is 221011011097. The next prime is 221011011157. The reversal of 221011011112 is 211110110122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 150772230436 + 70238780676 = 388294^2 + 265026^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 221011011092 and 221011011101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13813188187 + ... + 13813188202.

Almost surely, 2^221011011112 is an apocalyptic number.

It is an amenable number.

221011011112 is a deficient number, since it is larger than the sum of its proper divisors (193384634738).

221011011112 is a wasteful number, since it uses less digits than its factorization.

221011011112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27626376395 (or 27626376391 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 221011011112 its reverse (211110110122), we get a palindrome (432121121234).

It can be divided in two parts, 2210110 and 11112, that added together give a palindrome (2221222).

The spelling of 221011011112 in words is "two hundred twenty-one billion, eleven million, eleven thousand, one hundred twelve".